Young men are attacking each other with knives following fall-outs over social media, the senior police officer for knife crime in Nottinghamshire has said.

One of the main challenges for Nottinghamshire Police is clamping down on those who use social media such as Twitter, Facebook, YouTube and Snapchat to "goad" one another.

Detective Superintendent Simon Firth, who has been appointed as knife crime strategy manager, is set to deliver a major plan to reduce the number of young people, aged 14 to 24, who are arming themselves with blades.

He said some of the "serious violence" that the police are investigating is no longer drug-related but over what has been described as "mundane matters", including fallouts over girls.